Unolingo - The Next Great Puzzle

How quickly can you solve a Unolingo puzzle?
If you like crosswords, Sudoku, or word games like Scrabble, you'll love Unolingo. This word puzzle is fun for the daily commuter, the casual puzzler, or the serious word buff, and it's great for your Android device or Kindle Fire.
Every Unolingo puzzle is a 10 x 10 crossword without clues, with 26 empty squares that require the precise placement of each letter in the alphabet. Select from your choice of four difficulty levels, and use your word knowledge, reasoning, and deduction skills to complete the puzzle.
Unolingo puzzles can generally be completed in five to 15 minutes--perfect for when you're on the go.